wilson



(N0 Model.) 2 Sheets-Sheet 1.

J. WILSON.

I ROD POINTING MACHINE.

Patented Aug, 4 1885.

( ll-Ill WW U W N, PETERS, Fiwm 2 Sheets-Sheet 2.

(NoModeL) J. WILSON.

ROD POINTING MACHINE.

Patented Aug". 4, 1885.

W FL UNITED STATES PATENT FFICIiL.

JEssE N. BASSETT,

OF SAME PLACE.

ROD-POINTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 323,616, dated August 4, 1885.

Application filed April J7, 1885. (No model.)

To aZZ whom, it may concern:

Be itknown that I, J OHN WILsoN, a subject of Victoria, Queen of the United Kingdom of Great Britain and Ireland, residing at Lowell, in the county of Middlesex and Common wealth of li'lassachusetts, have invented certain new and useful Improvements in Forging- Machines, of which the following is a specification.

My invention relates to forging-machines; and it consists in the improvement hereinafter described and claimed, which improvement is adapted to rotate one or more bars or rods of metal while their ends are being forged by a drop or hammer.

In the accompanying drawings, on two sheets, Fig. 1 is an isometric view of a dead-stroke hammer, and my improvement in connection therewith; Fig. 2, a front elevation of myim- 2o provemcnt, except that the bracket which sup ports the beveled gears is in cross-section on the line as w in Fig. 4-, and the upper parts of the standards which support the anti-friction rolls are broken away, and said rolls are in cross-section; Fig. 3, a plan of my improvement, Fig. 4, a rightside elevation of my improvement, showing also part of the hammerbloclz, anvil, and dies; Fig. 5, a section on the line 3 y in Fig. 3, and also through the ham- 0 mer-bloclr, anvil, and dies.

The deadstroke hammer or drop-press shown is a common and well-known form of power-hammer used for swaging and forging.

' Its shaft A is provided with a fly-wheel, A, drivingpulley A, (driven by the belt A in the usual manner,) and provided, also,with a crank-wheel ,A, from which projects the wristpin A. The wrist'pin is connected by the pitnian or rod 0 to the spring D, from which 40 the hammer-block E is suspended in the usual manner. Said hammer-block is guided by ways If on the frame B.

All of the above-named parts are of the usual construction and operation.

The anvil B is secured to the frame B in the usual manner by a dovetail, b, entering a corresponding groove in said frame. The dies'F l?" are attached in the usual manner to the hammer-block and anvil, said dies being 0 provided with dovetails f f ,which enter dovetail grooves e I) in said block and anvil. The

dies are like those COlHll'lOUly employed for forging blanks or pins circular in crossscction, one at a time, upon the ends of suitablyheated rods, except that each die is provided with a number (equal in each die) of die-openingsf or recesses, each (lieopening being semicircular in vertical cross-section, and the openings in the lower die being directly under those of the upper die.

In forging articles of the class referred to, that is, those which have a circular cross-section-such as,for-instance,picker teeth orothcr round, tapering pins or cylindrical blanks-it is necessary to give a partial revolution of the rod on which such articles are being forged about its axis between the strokes of the drop orhammer block. When the rods are revolved by hand, the workman can only use a single rod and forge a single article at a time. To enable him to turn a number of rods and to forge a number of articles at once is the main object of this invention, although, of course, a single rod may be so turned by it.

My apparatus is here shown as supported 7 5 by the frame B of the drop-press, but obviously it might be a separate structure. The horizontal bed'piece G is stationary, being scoured to the front of the frame B by brackets g and bolts 9. Upon the bed-piece G slides a table, T. This table is provided with two pairs of vertical standards, H, rigidly secured to said table, which standards carry at their upper ends two parallel antifriction rolls, I, turning on horizontal axles at equal heights. The inner faces of said standards H are provided with horizontal projections h, which enter grooves j in the upper sliding bar, J. The standards H also serve as front and rear guides for the lower sliding bar, J, which rests upon 0 anttfriction rolls 1. The last-named rolls 1 turn bet-ween horizontal arms 7v, projecting from the sides of avertically-sliding block K, which runs up through the table T, and is guided laterally by the guides t, secured to the top of said table. The block K is normally pushed upward to bring the sliding bar J against the under surface of the sliding bar J by a spring, L, connected to the bed-piece G, and to a lever, M, near its free end, as {or shown in Fig. 1. "he lever M is pivoted at one end, at m, to the base of the frame 13, and

' is connected by the rod N to said block K .7" 9'", cuttherein.

said rod being pivoted to said block at n and to said lever at a the latter pivot being longer than the thickness of the connecting-rod N enough to allow said rod to move with the table T without moving the lever. Pressing down the free end of the lever M draws down the block K and separates the bars J J, the upper bar, J, being held up by the projections hand the longitudinal grooves j in said up per bar, J, and the lower bar, J, by its own weight, following said block when the latter is so drawn down. The object in so separating the bars is to admit between them the rods from which the forgings areto be made.

On a vertical stud, t, projecting upward from the table T, isjournaled a gear, i which may be turned by the handle or bar t secured to said gear radially therewith. The gear t engages with the rack-bar 9 which is supported above the table by a bracket, g, the latter being secured to the bed-piece G, as shown in Figs. 1 and 3, so that turning said gear t causes the sliding table, the standards, the bars J J, and the parts connected with them to advance toward or to recede from the dies, the table being guided by the straight rib t", which is parallel to the axis of the dieopenings, and between which rib and the gear i the rack-bar is embraced.

\Vhen it is desired to introduce the rods into the machine, the table is drawn forward, as above described, and the lever M is depressed, separating the bars J J, and the rods Y are placed on'the lower bar, J, in the notches r in the plates R secured to the front and back of the block K, these notches being just as far apart as the die-openings in the dies, and in line with them, when the bar J is in its raised position, and said notches being deep enough to allow said rods to rest on said lastnamcd bar. The length of the forgings may be gaged by pushing the rods Y, on which they are formed, endwise through thenotches 1' until said rods strike the front face of the lower die, or by any other convenient stopgage. 'The blank-rods being properly placed in the notches, the foot of the attendant is taken off from the lever M, the rods are clamped between the bars J J, and the table is moved forward until the rods are over the die openings of the lower die. The rods are rotated by causing the bars J J to slide for equal distances in opposite directions in contact with said rods. This is accomplished by the means described below. Each bar is provided on its front side with a rack,

WVith these racks jj engage spur-pinions S S, which turn loosely on the same vertical shaft V, supported in the yoke or bracket t the latter being attached to the table T, as shown in Fig.4. The spurpiuions S Shave an equal diameter and num ber of teeth, and are provided with the bev- U eled gears s s, which are equal to each other in the number of their teeth and are concentric with said pinions and secured to them,

respectively, the gear 8 above the pinion S and the gear 3 below the pinion S, the bevel of the gears being 011 the sides toward their respective pinions- WVith these beveled gears s s engages the beveled gear 8 which is secured to a horizontal shaft, 5 The shaft 8 turns in a journal-box, t, formed on said bracket i and is given a reciprocating rotary motion by means of a crank, s, secured to said shaft. Turning said shaft 8 evidently causes the pinions S S to revolve in opposite directions from each other, and causes the bars J J to slide equally in opposite directions and causes the blank rods to revolve about their axes, but without lateral motion, which is prevented by the notched plates R in the notches r, on which said rods lie, as above described. The lower pinion, S, is wider than the upper, to allow the lower bar, J, to be raised and lowered, as above described.

By the use of the above improvement a much greater amount of work can be accomplished in a given time.

The stud P, secured to the upper bar, J, may be grasped and said bar be moved endwise by the hand, and the movement of the upper bar will of course rotate the beveledgears s s and cause the pinions S S to slide the lower bar, J, in the opposite direction from that of the bar J.

My improvement may also be used torotate round rods or wires against a grinding or p0lishing wheel or belt.

It will in most cases be necessary to cover the adjacent surfaces of the bars J J with leath-- er or similar slightly-yielding material.

I claim as my invention- 1. The combination of the parallel bars adapted to slide longitudinally in suitable guides and provided with equal racks, the concentricspur-pinions, each engaging one of said racks, beveled gears, each concentrically connected to one of said pinions, and an intermediate beveled gear engaging said first-named beveled gears, whereby a longitudinal movement of one of said bars will cause a longitudi nal movement in the opposite direction of the other of said bars and rotate a round rod placed between and in contact with said bars at right angles to the same, as and for the purpose specified.

2. The combination of two parallel bars pro vided with equal racks, one of said bars having longitudinal grooves, suitable guides provided with projections adapted to enter said grooves, the other of said bars being adapted to be raised and lowered between said guides, a vertically-sliding block provided with antifriction rolls arranged between said guides below said last-named bar, two plates secured to the back and front of said sliding block and provided with notches, the bottoms of which are parallel with the top of said last-named bar, the concentric spnrpinions, each engaging one of said racks, beveled gears each concentrically connected to one of said pinions, and an intermediate beveled gear engaging ICO said first-named beveled gears, as'and for the purpose specified.

3. The combination of the bed-piece, the table sliding thereon, vertical standards secured to said table and provided with projee tions on their inner faces, two parallel bars arranged between said standards, the upper one of said bars being provided with longitudinal grooves to receive the projections on said standards,said bars being provided with racks, pinions engaging said racks, beveled gears, each connected to one of said pinions, an intermediate beveled gear engaging said beveled gears first named, ablock adapted to slide vertically between said standards and provided will rolls, a lever pivoted beneath said bedpiece, a rod connecting said sliding block and said lever, and a spring connecting said bedpiece and said lever and adapted to raise said lever and sliding block, as and for the purpose specified.

4. The combination of the bed-piece, the table sliding thereon and provided with a rib, a rack-bar secured to said bed-piece and enr braced between said rib, and a gear journaled on said table and engaging said last-named rack-bar, said gear, vertical standards secured to said table and provided with projections on their inner faces, two parallel bars arranged between said standards, the upper one of said bars being provided withlongitndinal grooves to receive the projections of said standards, said bars being provided with racks, pinions engaging said racks, beveled gears, each connected to one of said pinions, an intermediate beveled gear engaging said beveled gears first named, a block adapted to slide vertically between said standards and provided with rolls, a lever pivoted beneath said bed-piece, a rod connecting said sliding block and said levers,a spring connecting said bed-piece and said lever, and adapted to raise said lever and sliding block, as and for the purpose specified.

J ()Hh XVILSON.

\Vitnesses:

ALBERT H. MOORE, GERTRUDE M. DAY. 

